(another day)/(one more day)/(one day longer)

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. Why don’t you stay (another day)/(one more day)/(one day longer)?
  2. Why don’t you stay with us (another day)/(one more day)/(one day longer)?
    Are these sentences with three possibilities fine and grammatically OK?
2

Hi,

With my little grammar I have, I could say both sentences with their possibilities are grammatically OK

3

Why don’t you stay one day longer.

I don’t feel good with this sentence!!!

4

That is OK.